SEPTEMBER 19, 2026
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Case File

CVE-2026-48058

MEDIUM · CVSS 4.6 EPSS 0.19% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-07-28 · Last synced 2026-08-27

CyberRota Analysis

AI-Generated

Prior to version 0.3.2, nebula-mesh failed to set the Secure attribute on cookies, allowing potential exposure of session data through plaintext requests due to misconfigurations or improper URL handling. This vulnerability could lead to session hijacking, particularly in environments where HTTP traffic is not strictly enforced. Organizations using nebula-mesh should prioritize upgrading to version 0.3.2 to mitigate the risk of session disclosure.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

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CVE
CVE-2026-48058
Severity
MEDIUM
CVSS
4.6
EPSS
0.19%

Original NVD Description

nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.2, internal/web/session.go and internal/web/oidc.go set HttpOnly and SameSite=Lax on every cookie but never Secure. A single plaintext request to the origin (operator on a LAN, mistyped URL, HTTP→HTTPS not strictly enforced, reverse proxy misconfiguration) discloses the session. This issue has been patched in version 0.3.2.